Samsung 50S Fast charge of the batteries - how to charge the battery quickly without overheating the cells or causing lithium plating which could degrade the battery or cause it to catch fire.
Discover the Samsung 50S cell for fast charging in EVTOL applications, optimising performance while preventing overheating and degradation.
Value Propositions
Cylindrical 21700 form factor for efficient design.
Nominal capacity of 18.0 Wh and 5.0 Ah for reliable energy storage.
Top-quartile volumetric power density of 6467 W/l for rapid energy delivery.
Gravimetric energy density of 250 Wh/kg supports lightweight UAV designs.
Maximum continuous discharge of 45 A enables high-performance applications.
About the Cell
The Samsung 50S cell features a cylindrical 21700 form factor, providing a nominal capacity of 18.0 Wh and 5.0 Ah. With a volumetric energy density of 719 Wh/l, it stands out in the market, being around the median for volumetric energy density, which is 541.67 Wh/l. The gravimetric energy density of 250 Wh/kg is also competitive, being above the median of 210 Wh/kg. The cell's volumetric power density of 6467 W/l is among the highest in the database, significantly exceeding the median of 2029 W/l. Additionally, the gravimetric power density of 2250 W/kg is top-quartile compared to the median of 750 W/kg, making it ideal for demanding UAV applications. The standard charge current is 2.5 A, with a maximum continuous charge of 6.0 A, allowing for efficient charging without compromising safety.
Application Challenges
In EVTOL applications, fast charging of batteries is critical to ensure operational efficiency and reduce downtime. The challenge lies in charging the Samsung 50S cell quickly without overheating or causing lithium plating, which can degrade battery performance and pose safety risks. The high energy density of the 50S cell allows for quick energy replenishment, but careful management of charge rates is essential to prevent thermal runaway. The maximum continuous charge rate of 1.2 C enables rapid charging, but it must be balanced with thermal management strategies to ensure safe operation. Effective battery thermal management is crucial to maintain optimal performance and extend the lifespan of the cell in demanding UAV environments.
Why this Cell
The Samsung 50S cell is an excellent choice for EVTOL applications due to its high energy density and robust performance metrics. With a maximum continuous discharge rate of 45 A, it supports high power demands typical in UAV operations, making it suitable for rapid acceleration and heavy payloads. The cell's top-quartile volumetric power density of 6467 W/l ensures that it can deliver energy quickly, which is vital for fast charging scenarios. Furthermore, the gravimetric energy density of 250 Wh/kg allows for lightweight designs, enhancing overall UAV efficiency. This combination of high discharge capabilities and energy density positions the Samsung 50S as a leading option for UAV battery pack design, ensuring that operators can achieve extended flight times without compromising safety.
How Model-Based Design Helps
Simulation and model-based design play a crucial role in optimising the performance of the Samsung 50S cell in EVTOL applications. By modelling load profiles and thermal behaviour, engineers can predict how the cell will respond under various charging conditions. This approach allows for the identification of optimal charging strategies that minimise the risk of overheating while maximising energy delivery. For instance, simulations can help determine the ideal charge rates that balance speed and safety, ensuring that the cell operates within its thermal limits. Additionally, modelling voltage sag and usable energy helps in accurately predicting the state of charge (SoC) during flight, enabling better mission planning and reliability. This data-driven approach reduces the need for costly trial-and-error testing, allowing for more efficient UAV battery optimisation.
